[hidden] {
  display: none !important;
}

.login-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  overflow: hidden;
  padding: max(24px, env(safe-area-inset-top)) 22px max(24px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: clamp(48px, 11vh, 90px);
  min-height: 100vh;
  min-height: 100dvh;
  background: #0a0a18;
  font-family: var(--aira-persian-font);
  -webkit-user-select: none;
  user-select: none;
}

.login-screen::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(600px, 120vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(124, 58, 237, .12) 0%, transparent 65%);
  pointer-events: none;
}

.login-title-wrap {
  position: relative;
  z-index: 2;
  text-align: center;
  animation: loginTitleFade 1.2s ease-out both;
}

.login-title {
  margin: 0;
  font-family: var(--aira-persian-font);
  font-size: clamp(30px, 8vw, 38px);
  font-weight: 700;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #c4b5fd, #67e8f9, #a78bfa, #22d3ee, #c4b5fd);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: loginGradientShift 6s linear infinite;
  filter: drop-shadow(0 0 22px rgba(139, 92, 246, .35));
}

.login-subtitle {
  margin: 12px 0 0;
  color: #8585a2;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  animation: loginSubtitlePulse 3s ease-in-out infinite;
}

.login-title-line {
  width: 60px;
  height: 2px;
  margin: 18px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #8b5cf6, #06b6d4, transparent);
  animation: loginLineGrow 1.6s ease-out .4s both;
}

.login-orb {
  position: relative;
  z-index: 2;
  width: 140px;
  height: 140px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
  transition: transform .3s ease;
  animation: loginOrbFade 1.2s ease-out .25s both;
  -webkit-tap-highlight-color: transparent;
}

.login-orb:focus-visible {
  outline: 3px solid rgba(196, 181, 253, .85);
  outline-offset: 10px;
}

.login-orb:hover { transform: scale(1.06); }
.login-orb:active { transform: scale(.96); }
.login-orb:disabled { cursor: wait; }

.login-loader {
  position: absolute;
  inset: 0;
  display: block;
  border-radius: 50%;
  background: linear-gradient(45deg, #7c3aed, #06b6d4, #8b5cf6);
  animation: loginRotate 2s linear infinite;
  box-shadow: 0 0 40px rgba(124, 58, 237, .5), 0 0 80px rgba(6, 182, 212, .25);
}

.login-loader > span {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: linear-gradient(45deg, #8b5cf6, #ec4899, #06b6d4, #7c3aed);
}

.login-loader > span:nth-child(1) { filter: blur(8px); opacity: .9; }
.login-loader > span:nth-child(2) { filter: blur(16px); opacity: .7; }
.login-loader > span:nth-child(3) { filter: blur(28px); opacity: .5; }

.login-orb-inner {
  position: absolute;
  inset: 12px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, #1a1030 0%, #0a0a18 70%);
  box-shadow: inset 0 0 20px rgba(0, 0, 0, .8);
  transition: background .3s ease;
}

.login-orb:hover .login-orb-inner {
  background: radial-gradient(circle at 50% 45%, #241542 0%, #0a0a18 70%);
}

.login-lock-icon {
  width: 34px;
  height: 34px;
  color: #c4b5fd;
  filter: drop-shadow(0 0 8px rgba(139, 92, 246, .8));
  transition: all .3s ease;
  pointer-events: none;
}

.login-orb:hover .login-lock-icon {
  color: #fff;
  filter: drop-shadow(0 0 14px rgba(139, 92, 246, 1));
  transform: scale(1.1);
}

.login-orb.unlocked .login-lock-icon {
  color: #67e8f9;
  filter: drop-shadow(0 0 16px rgba(6, 182, 212, 1));
}

.login-hint {
  position: absolute;
  top: calc(100% + 28px);
  left: 50%;
  transform: translateX(-50%);
  color: #a5a5bf;
  font-family: var(--aira-persian-font);
  font-size: 13px;
  letter-spacing: .3px;
  white-space: nowrap;
  opacity: .9;
  transition: color .3s ease;
  pointer-events: none;
}

.login-orb:hover .login-hint { color: #c4b5fd; }
.login-caret { display: inline-block; margin-inline-start: 3px; color: #8b5cf6; animation: loginBlink .9s steps(2, start) infinite; }

.login-error {
  position: absolute;
  z-index: 3;
  right: 22px;
  bottom: max(22px, env(safe-area-inset-bottom));
  left: 22px;
  margin: 0 auto;
  max-width: 520px;
  color: #ff9b91;
  font-size: .8rem;
  line-height: 1.9;
  text-align: center;
}

.login-error[hidden] { display: none !important; }

@keyframes loginTitleFade { from { opacity: 0; transform: translateY(-16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes loginGradientShift { 0% { background-position: 0% 50%; } 100% { background-position: 300% 50%; } }
@keyframes loginSubtitlePulse { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
@keyframes loginLineGrow { from { width: 0; opacity: 0; } to { width: 60px; opacity: 1; } }
@keyframes loginOrbFade { from { opacity: 0; transform: scale(.85); } to { opacity: 1; transform: scale(1); } }
@keyframes loginRotate { to { transform: rotate(360deg); } }
@keyframes loginBlink { to { visibility: hidden; } }

@media (max-height: 560px) {
  .login-screen { gap: 42px; }
  .login-orb { width: 112px; height: 112px; }
}

@media (prefers-reduced-motion: reduce) {
  .login-screen *, .login-screen *::before, .login-screen *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}